Telegram & Discord, but not for DD.
I've been in many. Probably too many, with all the big names you see on twitter ihub & stocktwits.
Those are pump-rooms typically, even if there's so-called "DD" being discussed, the idea is simply to convince others to pile in.
You're better off watching & believing price-action and ignoring the nonsense "DD" folks dig up.
DD is what convinces bag-holders to hold forever and even add into downtrends, while everyone else is selling to them.
Whatever - GLTA